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Built 2026-10-19 (19 October 2026)

Weather Records on 4 September 1909

23 weather records were set or tied worldwide on 4 September 1909. Highest significance: Tranebjerg, DK.

Key Facts for 4 September 1909

  • On 4 September 1909, 23 weather records were set or tied at long-record stations worldwide.
  • 2 were record highs and 13 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 2 monthly and 21 daily.
  • Tranebjerg set a monthly record daily precipitation of 34.8 mm (1.4 in) on 4 September 1909.
  • Across 165 earlier years (1802 to 2026) the same calendar date averaged 454 records.

Record Map

23 stations
Weather records on 4 September 1909 23 station records on 4 September 1909 are marked on the map, coloured by record type.
23 station records on 4 September 1909 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 4 September 1909: highest significance records shown on the map
StationCountryTypeValueSignificance
TranebjergDenmarkRecord daily precipitation34.8 mm (1.4 in)36 of 100 (Notable)
OrilliaCanadaRecord daily precipitation25.7 mm (1.0 in)32 of 100 (Routine)
HvarCroatiaRecord daily precipitation30.1 mm (1.2 in)23 of 100 (Routine)
Groningen-1NetherlandsRecord daily precipitation27.0 mm (1.1 in)21 of 100 (Routine)
PalermoItalyRecord daily precipitation14.3 mm (0.6 in)20 of 100 (Routine)
VanersborgSwedenRecord daily precipitation24.7 mm (1.0 in)18 of 100 (Routine)
Chattanooga Wb CityUnited StatesRecord low maximum temperature22.2 C (72.0 F)18 of 100 (Routine)
Olympia Priest Pt ParkUnited StatesRecord high maximum temperature32.8 C (91.0 F)17 of 100 (Routine)
Nuwara EliyaSri LankaRecord low maximum temperature14.9 C (58.8 F)15 of 100 (Routine)
Heinersreuth-VollhofGermanyRecord low minimum temperature1.4 C (34.5 F)15 of 100 (Routine)
San Diego WboUnited StatesRecord low maximum temperature19.4 C (66.9 F)15 of 100 (Routine)
WienAustriaRecord low minimum temperature6.7 C (44.1 F)14 of 100 (Routine)
BambergGermanyRecord low minimum temperature2.8 C (37.0 F)14 of 100 (Routine)
RegensburgGermanyRecord low minimum temperature3.8 C (38.8 F)13 of 100 (Routine)
PeterboroughCanadaRecord low maximum temperature15.6 C (60.1 F)11 of 100 (Routine)
Frankfurt/Main (Feldbergstr.)GermanyRecord daily precipitation10.0 mm (0.4 in)10 of 100 (Routine)
Wilmington Wb CityUnited StatesRecord low minimum temperature15.6 C (60.1 F)10 of 100 (Routine)
Portland Rfc CityUnited StatesRecord high maximum temperature33.3 C (91.9 F)9 of 100 (Routine)
NurnbergGermanyRecord low minimum temperature3.5 C (38.3 F)8 of 100 (Routine)
SalzburgAustriaRecord low minimum temperature6.5 C (43.7 F)6 of 100 (Routine)
Munchen-NymphenburgGermanyRecord low minimum temperature5.3 C (41.5 F)6 of 100 (Routine)
Chattanooga Wb CityUnited StatesRecord daily precipitation13.0 mm (0.5 in)4 of 100 (Routine)
Alice Springs Post OfficeAustraliaRecord low minimum temperature2.8 C (37.0 F)2 of 100 (Routine)

Counts by Type and Timescale

23 records
Records on 4 September 1909 by type Records set or tied on 4 September 1909 by type: Highest daily maximum 2, Lowest daily maximum 4, Lowest daily minimum 9, Heaviest daily rainfall 8. 035810Highest daily maximum: 2Lowest daily maximum: 4Highest daily minimum: 0Lowest daily minimum: 9Heaviest daily rainfall: 8Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 4 September 1909 by type: Highest daily maximum 2, Lowest daily maximum 4, Lowest daily minimum 9, Heaviest daily rainfall 8.
Records on 4 September 1909 by type
Record typeRecords
Highest daily maximum2
Lowest daily maximum4
Highest daily minimum0
Lowest daily minimum9
Heaviest daily rainfall8
Heaviest daily snowfall0
Deepest snow cover0
Records on 4 September 1909 by timescale Records on 4 September 1909 by timescale: all-time 0, monthly 2, daily 21. 0102030all-time: 0monthly: 2daily: 21all-timemonthlydaily
Records on 4 September 1909 by timescale: all-time 0, monthly 2, daily 21.
Records on 4 September 1909 by timescale
TimescaleRecords
all-time0
monthly2
daily21

How Much Records Were Beaten By

22 broken records
Histogram of margins by which records were beaten on 4 September 1909 Margins by which the 22 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 18.1. Ties are not counted. 0510150 to 3: 153 to 5: 45 to 8: 18 to 10: 010 to 13: 013 to 15: 015 to 18: 118 to 20: 10 to 33 to 55 to 88 to 1010 to 1313 to 1515 to 1818 to 20
Margins by which the 22 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 18.1. Ties are not counted.
Histogram of margins by which records were beaten on 4 September 1909
MarginRecords
0 to 315
3 to 54
5 to 81
8 to 100
10 to 130
13 to 150
15 to 181
18 to 201

Top 20 by Significance

4 September 1909
Top 20 records on 4 September 1909 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
4 September 1909Tranebjerg, DKmonthly rain34.8 mm (1.4 in)7.2 mm (0.28 in)23 years36 of 100 (Notable)
4 September 1909Orillia, CAdaily rain25.7 mm (1.0 in)16.0 mm (0.6 in)36 years32 of 100 (Routine)
4 September 1909Hvar, HRdaily rain30.1 mm (1.2 in)18.1 mm (0.7 in)24 years23 of 100 (Routine)
4 September 1909Groningen-1, NLdaily rain27.0 mm (1.1 in)4.2 mm (0.17 in)23 years21 of 100 (Routine)
4 September 1909Palermo, ITdaily rain14.3 mm (0.6 in)2.5 mm (0.10 in)44 years20 of 100 (Routine)
4 September 1909Vanersborg, SEdaily rain24.7 mm (1.0 in)2.3 mm (0.09 in)34 years18 of 100 (Routine)
4 September 1909Chattanooga Wb City, USdaily low max22.2 C (72.0 F)3.4 C (6.1 F)22 years18 of 100 (Routine)
4 September 1909Olympia Priest Pt Park, USmonthly high max32.8 C (91.0 F)1.1 C (2.0 F)7 years17 of 100 (Routine)
4 September 1909Nuwara Eliya, LKdaily low max14.9 C (58.8 F)0.7 C (1.3 F)26 years15 of 100 (Routine)
4 September 1909Heinersreuth-Vollhof, DEdaily low min1.4 C (34.5 F)3.1 C (5.6 F)15 years15 of 100 (Routine)
4 September 1909San Diego Wbo, USdaily low max19.4 C (66.9 F)1.2 C (2.2 F)28 years15 of 100 (Routine)
4 September 1909Wien, ATdaily low min6.7 C (44.1 F)1.0 C (1.8 F)20 years14 of 100 (Routine)
4 September 1909Bamberg, DEdaily low min2.8 C (37.0 F)1.2 C (2.2 F)29 years14 of 100 (Routine)
4 September 1909Regensburg, DEdaily low min3.8 C (38.8 F)2.4 C (4.3 F)12 years13 of 100 (Routine)
4 September 1909Peterborough, CAdaily low max15.6 C (60.1 F)2.2 C (4.0 F)12 years11 of 100 (Routine)
4 September 1909Frankfurt/Main (Feldbergstr.), DEdaily rain10.0 mm (0.4 in)1.0 mm (0.04 in)19 years10 of 100 (Routine)
4 September 1909Wilmington Wb City, USdaily low min15.6 C (60.1 F)0.5 C (0.9 F)22 years10 of 100 (Routine)
4 September 1909Portland Rfc City, USdaily high max33.3 C (91.9 F)1.6 C (2.9 F)12 years9 of 100 (Routine)
4 September 1909Nurnberg, DEdaily low min3.5 C (38.3 F)0.5 C (0.9 F)15 years8 of 100 (Routine)
4 September 1909Salzburg, ATdaily low min6.5 C (43.7 F)0.5 C (0.9 F)8 years6 of 100 (Routine)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1802 to 1909
Records on 09-04 in each year Records set or tied on this calendar date in each year from 1802 to 1909. 1909 had 23 records. 01,0002,0003,0001802: 11805: 11823: 11833: 11837: 11839: 11845: 11847: 11850: 11854: 11856: 11857: 11858: 11861: 11863: 11864: 11867: 11868: 11869: 21871: 11872: 41874: 11875: 11877: 11880: 41881: 11883: 21885: 31887: 11888: 21889: 11890: 11891: 51894: 41895: 61896: 11897: 41898: 91899: 41900: 11901: 41902: 41903: 21904: 71905: 181906: 161907: 221908: 91909: 231910: 911911: 251912: 291913: 291914: 191915: 371916: 241917: 401918: 961919: 481920: 1051921: 1051922: 621923: 3251924: 1671925: 3391926: 2561927: 681928: 3411929: 3711930: 1021931: 4771932: 4291933: 4241934: 3931935: 5141936: 3091937: 4111938: 2361939: 4341940: 2871941: 5281942: 3231943: 4721944: 3411945: 5421946: 4311947: 6181948: 4091949: 3701950: 6421951: 4041952: 6451953: 8691954: 3721955: 4651956: 5861957: 2501958: 3841959: 3161960: 5521961: 9091962: 7331963: 4431964: 5071965: 6111966: 4281967: 7861968: 5461969: 5101970: 6441971: 7171972: 5131973: 5301974: 2,2791975: 4321976: 5821977: 3861978: 9401979: 4611980: 3551981: 5821982: 6171983: 1,0401984: 1,1071985: 9151986: 6631987: 6851988: 1,2591989: 6811990: 7871991: 7081992: 1,1321993: 8591994: 1,0011995: 1,2871996: 9071997: 1,4521998: 1,5641999: 1,4792000: 1,3362001: 8332002: 7672003: 1,0942004: 8982005: 9982006: 1,2682007: 1,0772008: 1,3352009: 9142010: 1,8042011: 1,3102012: 1,2092013: 6302014: 4612015: 8932016: 5972017: 8812018: 7582019: 6162020: 9572021: 5442022: 1,2562023: 1,2902024: 9852025: 6352026: 1,2221802186818951912192919461963198019972014
Records set or tied on this calendar date in each year from 1802 to 1909. 1909 had 23 records.
Counts for years before the ledger starts come from the same station rules.
Records on 09-04 in each year
YearRecords
18021
18051
18231
18331
18371
18391
18451
18471
18501
18541
18561
18571
18581
18611
18631
18641
18671
18681
18692
18711
18724
18741
18751
18771
18804
18811
18832
18853
18871
18882
18891
18901
18915
18944
18956
18961
18974
18989
18994
19001
19014
19024
19032
19047
190518
190616
190722
19089
190923
191091
191125
191229
191329
191419
191537
191624
191740
191896
191948
1920105
1921105
192262
1923325
1924167
1925339
1926256
192768
1928341
1929371
1930102
1931477
1932429
1933424
1934393
1935514
1936309
1937411
1938236
1939434
1940287
1941528
1942323
1943472
1944341
1945542
1946431
1947618
1948409
1949370
1950642
1951404
1952645
1953869
1954372
1955465
1956586
1957250
1958384
1959316
1960552
1961909
1962733
1963443
1964507
1965611
1966428
1967786
1968546
1969510
1970644
1971717
1972513
1973530
19742,279
1975432
1976582
1977386
1978940
1979461
1980355
1981582
1982617
19831,040
19841,107
1985915
1986663
1987685
19881,259
1989681
1990787
1991708
19921,132
1993859
19941,001
19951,287
1996907
19971,452
19981,564
19991,479
20001,336
2001833
2002767
20031,094
2004898
2005998
20061,268
20071,077
20081,335
2009914
20101,804
20111,310
20121,209
2013630
2014461
2015893
2016597
2017881
2018758
2019616
2020957
2021544
20221,256
20231,290
2024985
2025635
20261,222

Download the Data

  • Data for records on 1909-09-04: CSV or JSON. Field meanings are on the data page.

Sources: Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).